... performance ratio 3.OEM&ODM: YES Product Description Item nameFlat o ring MaterialSilicone,,FKM,FPM,VITON A, VITON B, GF, ... °C.4.Application: Mainly used for vacuum resistance, high temperature resistance, chemical corrosion resistance of sealing materials in defense industrial airplanes ... according to your drawings & samples. Our main products contains O-type Loop, U-type Loop, Y-type Loop, rubber ...